Hi Gerald
I had a couple of questions regarding your above post.
1) Wiring: The original 2088 Surflo we have is rated at 4 amp draw according to the label, even the replacement 2088 is 7 amp and the revolution is 7.5 amp. Our pump wiring seems adequate but is there a test to be sure before buying a pump that requires more amps?
2) Why do you suppose the newer 2088 requires almost twice the amperage of the 1997 2088? Seems that when dry camping and using the pump, a higher power draw is not desireable?
3) The 2088 has a built in check valve. The revolution 4008 omits this in the specs. on the shurflo site. Does this mean a seperate check valve is needed?
4) What value is there for the surge tank and what about a low point drain for that?
Thanks for your opinion and time
Keith
Keith,
I'm not Gerald, but maybe I can help.
1) Wiring: 16 gauge wire can handle somewhere around 13 amps. 18 gauge is 10 amps. So, check the wire gauge and look for the circuit breaker. 7.5 amps should hardly be a problem, unless the fuse is around 7.5. My fuse is 15 amps. So, the "test" would be to look at the wire and fuse.
2) Newer pumps were made because people wanted more "house like" showers with steady flow, better pressure and lower noise. The extra draw is minimal when dry camping. You can only pump up to a 100 gallons and our big gensets can make up for the extra juice used quickly.
3) I don't know for sure, but it couldn't be an RV pump if it didn't have have a check valve to hold pressure.
4) I don't have a surge tank and neither did my two trailers and boat. With older, cheaper pumps the water "surged" when the faucet was partially open. Besides that, a surge tank does not fill with water. They have air in them to cushion the surges. If mounted right side up, they would drain. Newer, variable speed pumps adjust to pressure needs without needing a surge tank.
Regarding low point drains.... I'm not sure they are really useful in a Aqua/HydroHot equipped motorhome. They will not be effective at getting much water out of a 40 foot motorhome with water lines running in random directions. Draining water will have little use for winterizing. The ONLY way to safely winterize a Aqua/HydroHot is with about 4 or 5 gallons of the pink RV antifreeze.
Bill Sprague